Answer:
a.(x+5)(x-5) b.(y+6)(y-6) c.(x-1)(x+13) d. (s+2)(s+5)
Step-by-step explanation:
Sorry no step for c and d
for a 25 is a perfect square 5*5=25 -5*5=-25
for b it's same
sorry I'm rushing
Using sampling concepts, it is found that this is an example of a random sample.
<h3>How are samples classified?</h3>
Samples may be classified as:
- Convenient: Drawn from a conveniently available pool.
- Random: All the options into a hat and drawn some of them.
- Systematic: Every kth element is taken.
- Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed.
- Stratified: Also divides the population into groups. Then, a equal proportion of each group is surveyed.
In this problem, one winner is chosen at random from all the participants, hence random sampling is used.
More can be learned about sampling concepts at brainly.com/question/25122507
Answer:
I dont get what you are asking can you put more detail for what you want the answer to be please
Step-by-step explanation:
Answer:
y=2
Step-by-step explanation:
plug in 1
1+y=3
-1 -1
y=2
Answer:
C. 6.3cm
Step-by-step explanation:
The length of the arc is calculated using the formula;
The radius of the circle is r=10cm
The central angle is 36 degrees.
We simplify to get;
